CN1068555A - Formula of flyash cement and its production process - Google Patents
Formula of flyash cement and its production process Download PDFInfo
- Publication number
- CN1068555A CN1068555A CN92108964A CN92108964A CN1068555A CN 1068555 A CN1068555 A CN 1068555A CN 92108964 A CN92108964 A CN 92108964A CN 92108964 A CN92108964 A CN 92108964A CN 1068555 A CN1068555 A CN 1068555A
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- CN
- China
- Prior art keywords
- flyash
- cement
- ignition
- grog
- loss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004568 cement Substances 0.000 title claims abstract description 40
- 239000010881 fly ash Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000010440 gypsum Substances 0.000 claims abstract description 6
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 6
- 239000011593 sulfur Substances 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 3
- 239000010436 fluorite Substances 0.000 claims abstract description 3
- 239000002956 ash Substances 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000002989 correction material Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000004927 clay Substances 0.000 abstract description 3
- 239000004615 ingredient Substances 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000009472 formulation Methods 0.000 abstract 2
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012547 material qualification Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/47—Cooling ; Waste heat management
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a formulation of fly ash cement for building material and its production process, its formulation mainly uses 6-10% fly ash to replace the clay used for conventional cement production, after mixing with iron powder, limestone, siliceous raw materials, fluorite, one, three coals and processing and grinding, calcine to clinker, then mix and grind with low loss of ignition fly ash, gypsum to make the required fly ash cement, its process mainly adopts classified storage, homogenizes respectively, the "trisection method" used separately; a method for preparing 'two-high' ingredients, namely high-sulfur and high-aluminum ingredients and a cement ultrafine powder mill. The invention has simple process, low product cost, good quality, is beneficial to popularization and use and has great economic and social benefits.
Description
The present invention relates to the prescription and the production technique thereof of the pulverized fuel ash cement that a kind of material of construction uses.
Cement is material of construction a large amount of and commonly used, form and mostly Cement Production is that admixture clay and other raw materials are fired, but, power plants is more, a large amount of flyash can discharge in power plant, not only restricting the development of electric power, and the physical and mental health that is endangering the mankind, therefore utilization of coal ash is that people want the problem that solves always, also have in the practice to utilize flyash to produce cement, but owing to adopt conventional equipment and production technique thereof, it is also scientific and reasonable not to the utmost to prepare burden, doping quantity of fly ash is improper, so quality product is not high, use is restricted.
Purpose of the present invention just provides a kind of new flyash that utilizes and produces the prescription and the production technique thereof of cement, thereby opens up the approach of a new manufacture of cement.
The object of the present invention is achieved like this, adopting " two-supremes " is high alumina, high-sulfur batching, adopts " threefold division " to use to flyash, promptly according to the height of flyash vector, its classification is stored, homogenizing is separately used respectively, and also can with superfine pulverizing technology.
The present invention produces the cement quality height, and is profitable, produces early-strength type and coventional type 425 especially
#Cement, more high-quality, and the present invention is for realizing generating, building materials, decontamination, the integrated new way of having opened up of save energy.
Below in conjunction with technological process of production skeleton diagram and embodiment its invention is elaborated.
Accompanying drawing is the production technique flow diagram.
Shown in figure, the production technique of pulverized fuel ash cement is: by the flyash of power plant through air conveying (gas pipeline conveying), height according to the fine coal loss on ignition, its classification is stored, loss on ignition is at the high loss on ignition flyash of the title more than 8%, the title of loss on ignition below 8% hangs down loss on ignition flyash, after the classification, carry out homogenizing respectively again, separately use, this claims " threefold division ", after " threefold division " handled, the flyash of high loss on ignition is in order to replacing the clay of conventional manufacture of cement, and low loss on ignition (high reactivity ash) is as blended material, take this art breading after, make the flyash loss on ignition low 3-4 percentage point, help the production of pulverized fuel ash cement, early-strength type Cement Production particularly is after " threefold division " handled, the conventional raw material of the flyash of high loss on ignition and cement is prepared burden, adopt " two-supremes " batching way of science during batching, i.e. high-sulfur, high alumina batching way makes SO in the grog
3At 2-3%, Al
2O
3Between 6-6.5%, its grog prescription is (weight ratio):
High loss on ignition flyash 6-10%
Iron powder 1.5-3%
Wingdale 82-66.5%
Siliceous correction material 2-6%
Fluorite 0.5-1.5%
One, three coal 8-13%
Other raw materials beyond the high loss on ignition flyash in use, through one, behind the two-stage crushing, with lift charging feed bank, prepare burden with microcomputer again, increase loss on ignition flyash in the above-mentioned prescription to realize containing the high alumina composition, add one, three coals are to realize containing the high-sulfur composition, i.e. " two-supremes " dosing method, its objective is increase by early strong material, cause grog to coagulate soon, initial set is 10 to 20 minutes, final set is 15 to 50 minutes, this has also created advantageous conditions for a large amount adding of later process flyash, after material prepares, send into raw material drying and grinding mill, carry out levigate, through air conveying homogenizing to continous way, homogenizing is carried out in the plasticizing storehouse, plasticizing, make its raw material qualification rate reach 90-100%, simultaneously, the high-ductility dust that produced of the tower machine shaft kiln of dish (crystal seed and plasticizing material) is collected with Glass Fibre Bag, reclaim the back with air conveying to homogenizing, raw material with above-mentioned prescription in the plasticizing storehouse carries out all again, plasticizing, thereby improve the performance of flyash batching plasticity difference, this also is one of creation point of the present invention, afterwards, delivers to the tower machine shaft kiln of dish through gas pipeline (air conveying), giving on this kiln adds the water pan-pelletizer, computer control is adopted in water mixing, makes its wet bulb intensity reach the 710-770 gram, dry bulb intensity reaches the 1705-1350 gram, after the balling-up, advance the people and coil tower machine shaft kiln, under 1300-1350 ℃ temperature, calcine, calcining is carried out for continuity, become grog, and, enter the grog bank in the lump with after power plant's furnace bottom wet slag cooling, afterwards, with the low loss on ignition flyash after grog and the homogenizing (as blended material), gypsum is prepared burden at grog and flyash batching storehouse, and its prescription is (is example with R type pulverized fuel ash cement): (weight ratio)
Grog 75-58%,
Low loss on ignition flyash 25-40%,
Gypsum 0-2%,
Wherein gypsum is used to regulate cement setting time, after microcomputer prepares material, carry out levigately by required with the superfine cement of φ 2.2 * 12m mill, its grinding rate is controlled at 0.08 square hole sieve screen over-size 1-4%, this equipment is one of main processing means of the present invention, employing high-sulfur batching has been simplified plastering, and this also is a distinctive feature of the present invention, after the superfine cement mill is levigate, through the air conveying cement silo of sending into of gas pipeline, loose as required bag or packing just can be sold use again.
In the above-mentioned explained hereafter, the Charge Mixture Control in each stage, the add-on of flyash, the isoparametric controlling valu of finish fineness requires to decide to the difference of product according to the user, as 425
#Portland cement, but the volume capping of flyash, fineness is controlled more relatively, and 425R type cement, the addition content of flyash takes off limit, and it is thin that fineness control is wanted relatively, the flyash water content is less than 1%, send ash to guarantee with dry method, and other raw materials are identical to ingredient requirement with conventional cement.In an embodiment, such as producing 425
#Cement is increased loss on ignition fine coal sand 9%, makes SO in the grog
3Be controlled at 2.7%, AL
2O
3Be controlled at 6.3%, wet bulb intensity is 745 grams, and dry bulb intensity is 1750 grams, mixes low loss on ignition flyash 33% in the grog that burns till, and cement fineness is controlled at 3.5%(0.08 square hole sieve surplus), the cement of this composition, after measured, specific targets are:
From the above, it is simple that the present invention produces cement industry, solved the high-value-use problem of flyash and thick slag effectively, for country can save great amount of water resources, Mineral resources, fuel, soil etc., for good condition has been created in the development of electric power, also opened up a new way for manufacture of cement, and the cement quality that this invention is produced is good, cost is low, be convenient to promote the use of, can produce huge economic benefit and social benefit.
Claims (5)
1, the prescription with flyash production pulverized fuel ash cement is characterized in that: (weight ratio)
A, grog prescription are:
High loss on ignition flyash 6-10%
Iron powder 1.5-3%
Wingdale 82-66.5%
Siliceous correction material 2-6%
Fluorite 0.5-1.5%
One, three coal 8-13%
B, grog 75-58%
Low loss on ignition flyash 25-40%
Gypsum 0-2%
2, realize that fine coal produces the production technique of pulverized fuel ash cement and it is characterized by: by power plant through air conveying flyash, (greater than 8% is high loss on ignition according to the height of flyash loss on ignition, be low loss on ignition less than 8%) its classification is stored, the difference homogenizing, separately use i.e. " threefold division ", after " threefold division " handled, the flyash of high loss on ignition is together through one, raw material behind the two-stage crushing adopts high-sulfur, high alumina i.e. the batching way of " two-supremes ", by claim 1(A) described prescription prepares burden, afterwards, carry out levigate with raw material drying and grinding mill, use air conveying homogenizing again to continous way, homogenizing is carried out in the plasticizing storehouse, plasticizing, simultaneously, send into homogenizing again after the dust of the high-ductility that produced of the tower machine shaft kiln of dish reclaimed, plasticizing is together carried out homogenizing with raw material drying and grinding mill levigated raw material in the storehouse, plasticizing, afterwards, add the water pan-pelletizer by air conveying giving to the tower machine shaft kiln of dish again, add water make wet bulb enter the dish tower machine shaft kiln at high temperature calcine, become grog, after the low wet slag cooling of power plant's stove, deposit the grog bank in, afterwards, again with grog, hang down loss on ignition flyash after the homogenizing, gypsum is by claim 1(B) described prescription requirement prepares burden, and carry out levigate with the superfine cement mill, to cement silo, just can carry out in bulk as required or the bag packing and selling through air conveying.
3, the production technique of pulverized fuel ash cement according to claim 2 is characterized in that said " two-supremes " batching way is to make SO in the grog
3Content is at 2-3%, AL
2O
3Content is at 6-6.5%.
4, the production technique of pulverized fuel ash cement according to claim 2 is characterized in that said temperature ball intensity is the 710-770 gram, and dry-bulb temperature is the 1705-1350 gram, and coiling tower mechanical shaft kiln burning temperature is 1300-1350 ℃.
5, the production technique of pulverized fuel ash cement according to claim 2 is characterized in that said to have superfine cement mill to carry out levigate, and its fineness is controlled at 0.08 square hole sieve screen over-size 1-4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92108964A CN1068555A (en) | 1992-08-06 | 1992-08-06 | Formula of flyash cement and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92108964A CN1068555A (en) | 1992-08-06 | 1992-08-06 | Formula of flyash cement and its production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1068555A true CN1068555A (en) | 1993-02-03 |
Family
ID=4943904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92108964A Pending CN1068555A (en) | 1992-08-06 | 1992-08-06 | Formula of flyash cement and its production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1068555A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370484A (en) * | 2013-08-16 | 2015-02-25 | 山西华通蓝天环保有限公司 | Early strength type high mixing quantity activation ultrafine fly ash cement |
| CN105152555A (en) * | 2015-10-28 | 2015-12-16 | 苏州奥莱鑫建材有限公司 | Cement material |
| CN105198249A (en) * | 2015-10-28 | 2015-12-30 | 苏州奥莱鑫建材有限公司 | Preparation method for cement material |
| CN105837152A (en) * | 2016-06-14 | 2016-08-10 | 安徽华业建工集团有限公司 | Building cement and preparation method thereof |
| WO2016134552A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| WO2016134551A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| CN109293259A (en) * | 2018-09-04 | 2019-02-01 | 山东东华水泥有限公司 | A kind of cement kiln synergic processing high-efficiency pulverized coal boiler fly ash technique |
| CN114940613A (en) * | 2022-06-05 | 2022-08-26 | 吉林市市政建设集团有限公司 | Production process for processing cement board by using fly ash |
-
1992
- 1992-08-06 CN CN92108964A patent/CN1068555A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370484A (en) * | 2013-08-16 | 2015-02-25 | 山西华通蓝天环保有限公司 | Early strength type high mixing quantity activation ultrafine fly ash cement |
| WO2016134552A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| WO2016134551A1 (en) * | 2015-02-26 | 2016-09-01 | 华智节能(香港)有限公司 | Inorganic cement material and manufacturing method thereof |
| CN105152555A (en) * | 2015-10-28 | 2015-12-16 | 苏州奥莱鑫建材有限公司 | Cement material |
| CN105198249A (en) * | 2015-10-28 | 2015-12-30 | 苏州奥莱鑫建材有限公司 | Preparation method for cement material |
| CN105837152A (en) * | 2016-06-14 | 2016-08-10 | 安徽华业建工集团有限公司 | Building cement and preparation method thereof |
| CN109293259A (en) * | 2018-09-04 | 2019-02-01 | 山东东华水泥有限公司 | A kind of cement kiln synergic processing high-efficiency pulverized coal boiler fly ash technique |
| CN109293259B (en) * | 2018-09-04 | 2023-12-12 | 山东东华水泥有限公司 | Technology for cooperatively disposing fly ash of high-efficiency pulverized coal boiler by cement kiln |
| CN114940613A (en) * | 2022-06-05 | 2022-08-26 | 吉林市市政建设集团有限公司 | Production process for processing cement board by using fly ash |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |